Improvement in machines for doubling and twisting silks



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AM, PHom-uHoGRAPH/c Ua MX (aman/vak PRocsssl "U'vITED STATES PATENTOFFICE.

HENRY A. CHAPIN, OF BRIDGEPORT, CONNECTICUT;

IMPROVEMENT IN MACHINES FOR DOUB'LING AND TWISTING SlLKS.

Specification formng'part of Letters Patent No. 135,522, `dated February4, 1873.

To all whom it may concern:

Be it known that I, HENRY A. CHAPIN, of Bridgeport, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Doubling and Spinning Machinery; and I do hereby declarethat the following' is a full, clear, and exact description of the same,reference being had to the accompanying drawing forming part of thisspecification, and in which` verse sections of the same at the lines x xand y y respectively.

Similar lettersof reference indicate corresponding parts throughout theseveral figures ofthe drawing.

My invention relates to doubling and spinning machinery applicable amongother purposes to, .the manufacture of sewing sillrs. The improvementsconsist, first, in a tension device; and second, in acable-lay governorand yarn-carrier, whereby the doubling. and twisting may be performedsimultaneously, as it were, thereby obviating the necessity of' windingthe severa-l threads separately onto one bobbin, to be subsequentlytwisted; third, in a combination of the cable-lay governor, theyarn-carrier and the drawing-pulley; fourth, in a combination of' thetension device, cablelay governor, yarn-carrier, and drawing-pulley;and, fifth, in a novel construction of yarncarrier, whereby convenienceis aorded for adjusting the delicate thread around the drawing-pulley,and at the same time supports for the guide-pulleys are afforded.

Referring to the accompanying drawing, A A represent the supply-bobbins,of which there may be two or more, three here being shown, and fromwhich the threads to be doubled and twisted are drawn, the same beingarranged upon pins carried by the bobbinboard B. C is the frame ofthemachine, and D a vertical drivingshaft carrying friction driving-pulleysE El E2, and which may be started and stopped by fast and loose pulleys,not shown in the drawing. The pulleys E El E2 upon the shaft D impartmotionrespectively by friction to pulleys F Fu F2 F3, adjusting-screws bb serving to regulate the amount of friction. If' desired, spur-gear orbelt-wheels may be substituted for these fric.- tion-pulleys. The pulleyF, which is driven by the pulley E, has attached to its upper surfacethe yarn-carrier G and yarn-guide H, and runs loosely upon the uprighthollow shaft I. The pulley F is fast on said hollow shaft, which latterpasses up through a box in the frame C and pulley F. This shaft carriesupon its upper end the drawing-pulley J. A nut, c, serves to secure thepulley F to such hollow shaft, and has a transverse slot on its underside, in which are two small grooved pulleys, over which the yarn passesto prevent abrasion on ifs way to the Eier-arms d, and from thence tothe bobbin K, on which the doubled and twisted threads are built. Thedrawing-pulley J is attached firmly to the hollow shaft I by a nut, e.This drawing-pulley is constructed to grip and draw the yarn, as itcomes from the carrier G, at a variable rate of action, substantially asdescribed in Letters Patent No. 106,466, issued to William SparksThomson, as assignee of myself, August 16, 1870. The dier-arms d d arefirmly attached to the pulley. F, and said arms, pulley F', hollow shaftI, nut e, and drawing-pulley J are driven by the pulley E on the shaftD. The pulleys F and F have a differential motion imparted to them bythe pulleys E E on the shaft D, which causes` the yarn to be drawndownward by the drawing-pulley J. L is the tension device lo catedbetween the supply-bobbins A A and thc cable lay-governor M. Thistension device is secured to the-bobbin-board B, and consists of' two ormore V-shaped pulleys, j', arranged upon a common shaft, and havingtheir free revolutions upon said shaft retarded and regulated by aspring, g, and thumb-screw h. These V-shaped pulleys are held insuitable relative positions upon their shaft by collars t',

which are prevented from revolving by pins that enter a spline-way cutin the shaft. On each side of' said pulleys is placed a thin washr2 e i135r er of felt or other suitable material. By this construction of thetension device L it will be seen that, upon turning the thumb-screw h,to produce or regulate compression of the spring g, each and everypulley f will be subjected to an equal pressure against atension-support, K. The cable-lay governor M is constructed of two ormore grooved pulleys, l, of suitable diameter, and arranged to revolvefreely and v way, m, and a cross or traverse thread, fn. The pulley F2has a long hollow hub that passes up through a box in the frame C, andis provided on the interior of its hub with a spline, o, which,beingproperly adj usted to the splineway m, causes the pulley F2 to impartrevolving motion to the bobbin-spindle N. The pulley F2 is driven by theupper half ofthe pulley E2, and travels perceptibly faster than thepulley F and its attachments'. The pulley F3 has a long hollow hub,which extends down through a box in the frame C. Arranged within the hubof this pulley is a crescent-shaped traversing-tin ger, p, provided witha stem. This finger is adjusted to lit in and follow the traverse-threadn upon the spindle N, and is held in its place and up to the spindle bya hollow screw, g, into which the stem of the finger :is tted. Thepulley F3 is controlled by the lower haltl of the pulley E2, and. has adifferent speed from the pulley F2, such difference of speed determiningthe relative vertical movement of the spindle N. The bobbin K sitsfreely upon the spindle N resting upon a flange, r, and is revolved bythe spindle N by means of any suitable friction device.

, The operation of doubling and twisting or spinning with 'the machineand its ombinations, as described, is as follows: The ends of the yarnsfrom the supply-bobbins A A are passed each once around one of thegrooved pulleys of the tension device L; from thence downward, and eachyarn passed once around one of the grooved pulleys of the cable-laygovernor, and thereby the twist first given to each strand is retainedin it, and so delivered at the point where the strands are united underthe cable-lay governor. At a central point immediately under thecable-lay governor the yarns are united into a single thread at an angledetermined by the relative positions of the pulleys of the cable-laygovernor. From thence the material being twisted passes down over thepulleys on the end of the yarn-carrier G; afterward diagonally over oneof the pulleys t ou the yarn-guide H; from thence around thedrawing-pulley J and back to opposite pulley t of the yarn-guide; fromwhence it passes diagonally upward to and over a pulley, s', upon theyarn-carrier, and afterward downward through the hollow shaft; thenpassing over small pulleys w w in the nut c; from thence to and and overpulleys u c on the ier-arm d, from which it is wound around the bobbin.

In a machine constructed as described the separate winding of theseveral threads onto a common spool prior to twisting is dispensed with,the doubling and twisting being performed at once. Each spindle, too, ina frame of spindles having an independent traverse motion, everyfacility is afforded for independent adjustment or stoppage of a singlespindle without affecting the rest, and for running the spindles ondi'erent numbers. Furthermore, the yarn-carrier G being of an openarm-like construction, convenience is afforded 'for adjusting the threadaround the drawing-pulley J.

What is here claimed, and desired to be secured by Letters Patent, is-

l. The tension device L, consisting of the shaft, the pulleys, thesliding collars connected to the shaft so as not to turn, and the devicefor regulating the tension on several threads simultaneously' andequably, the said parts being combined and operating substantially asdescribed. v

2. The stationary cable -lay governor M, applied between the tensiondevice L and yarn-carrier Gr, substantially as and for the purpose setforth.

3. The combination of the cable-lay governor M, a yarn-carrier, G, and adrawing-pulley, J, substantially as described.

cable-lay governor M, yarn-carrier G, and drawing-pulley J,substantially as described.

5. The yarn-carrier G, constructed with pulley-supports and open at oneside, as described, and arranged relatively with the drawing-pulley J,substantially as specified.

HENRY A. GHAPIN.

Witnesses:

HENRY T. BROWN,

FRED. HAYNEs.

4. The combination of the tension device L,

